I took my 617 to the range today to test out my Apex Mass Drive Hammer Kit. I've been playing with different kits to see which one I prefer and although the jury is still out I really like the Apex kit.
My double action pull is 8 pounds. Not bad for shooting a .22. Single action is 2.2 pounds. I'm using a factory mainspring and an 11 pound rebound spring to get such a light trigger. Accuracy is greatly improved so I'm going to shoot this gun at next month's Steel Challenge match in the Rimfire Open Division against all the bottom feeders. I may not win but I'm going to give them a run for their money.